The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 30, 1993
Filed:
Aug. 01, 1991
Applicant:
Inventors:
Teruo Maruyama, Hirakata, JP;
Tatsuhisa Taguchi, Katano, JP;
Yoshikazu Abe, Neyagawa, JP;
Mikio Hasegawa, Neyagawa, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04C / ; F04D / ;
U.S. Cl.
CPC ...
417 42 ; 417 45 ; 417203 ; 417205 ; 4174234 ; 4182011 ; 318 77 ; 318 85 ;
Abstract
A fluid rotating apparatus according to the present invention is designed to promptly achieve an extremely high degree of vacuum from promptly atmospheric pressure promptly by its single apparatus. Moreover, high-speed synchronous rotation of the rotary shafts of the apparatus is controlled by use of a rotary position detecting sensor, to thereby avoid control mechanical contact thereof with a gear or the like. In addition, hydrostatic bearing are employed for supporting the rotary shafts to avoid of mechanical abrasion and the use of lubricant oil.